Defense

Defense is a 1-player Missile Command clone for multiple systems.

The player tries to defend their 6 cities on the bottom of the screen from incoming missiles by firing defensive warheads. A cross-hair selects where to fire defensive missiles. The player has a limited number of missiles each round. When a city is hit, it's lost permanently, and it's game over when all cities are destroyed. Each round, more and faster moving missiles appear.